公开(公告)号：US09237116B2

公开(公告)日：2016-01-12

申请号：US14025338

申请日：2013-09-12

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Xuan Wang ,  Jingfeng Zhang ,  Jie Meng ,  Wenwen Dong ,  De Fu Li ,  Yong Lu

IPC: H04L12/28 ,  H04L12/919 ,  H04N21/434 ,  H04L29/06 ,  H04N21/61

CPC classification number: H04L47/765 ,  H04L65/104 ,  H04L65/80 ,  H04N21/4344 ,  H04N21/6118

Abstract: One embodiment of the invention includes a coax media converter (CMC) system communicatively coupled to at least one modem in a network system. The system includes a frequency reference configured to generate a clock signal in a local time domain. The system also includes a scheduling processor configured to extract a bandwidth allocation message from a data stream and to re-stamp each of at least one timestamp in the bandwidth allocation message in the local time domain based on the clock signal to generate a corresponding updated bandwidth allocation message comprising a respective at least one re-stamped timestamp. The system further includes a downstream physical interface configured to transmit the updated bandwidth allocation message to the at least one modem to schedule upstream burst transmissions from the respective at least modem based on the at least one re-stamped timestamp.

Abstract translation: 本发明的一个实施例包括通信地耦合到网络系统中的至少一个调制解调器的同轴电缆媒体转换器（CMC）系统。 该系统包括被配置为在本地时域中产生时钟信号的频率参考。 该系统还包括调度处理器，其被配置为从数据流中提取带宽分配消息，并且基于时钟信号对本地时域中的带宽分配消息中的每个至少一个时间戳进行重新标记，以生成对应的更新带宽 分配消息包括相应的至少一个重新标记的时间戳。 所述系统还包括下游物理接口，被配置为将所述更新的带宽分配消息发送到所述至少一个调制解调器，以基于所述至少一个重新标记的时间戳来调度来自所述至少一个调制解调器的上行突发传输。

公开(公告)号：US09503180B2

公开(公告)日：2016-11-22

申请号：US14476969

申请日：2014-09-04

Applicant: Cisco Technology, Inc.

Inventor： Hang Jin ,  Tong Liu ,  Pawel Sowinski ,  De Fu Li ,  John Skrobko

IPC: H04J14/08 ,  H04B10/079 ,  H04J3/16 ,  H04L12/26 ,  H04L12/28

CPC classification number: H04B10/0795 ,  H04B10/0793 ,  H04J3/1694 ,  H04J14/086 ,  H04L12/2801 ,  H04L43/0882

Abstract: Presented herein are techniques for detection and avoidance of interference in a telecommunications network. In one example, a cable modem termination system (CMTS) is configured to receive upstream traffic from a plurality of cable modems. The CMTS detects collision characteristics resulting from substantially simultaneous transmissions from different combinations of the cable modems. Based on the detected collision characteristics, the CMTS designates/identifies collision groups for each of a plurality of the cable modems. After designation of the collision groups, the CMTS schedules upstream transmissions by the plurality of cable modems such that cable modems within the same collision group do not transmit within a same time frame and such that two or more cable modems that are not within the same collision group may transmit within a same time frame.

Abstract translation: 这里提出的是用于检测和避免电信网络中的干扰的技术。 在一个示例中，电缆调制解调器终端系统（CMTS）被配置为从多个电缆调制解调器接收上行流量。 CMTS检测来自电缆调制解调器的不同组合的基本同时传输产生的冲突特性。 基于检测到的碰撞特性，CMTS指定/识别多个电缆调制解调器中的每一个的冲突组。 在指定冲突组之后，CMTS调度多个电缆调制解调器的上行传输，使得同一冲突组内的电缆调制解调器在相同的时间帧内不发送，并且使得两个或更多个不在同一冲突内的电缆调制解调器 组可以在相同的时间帧内传输。

公开(公告)号：US20160072578A1

公开(公告)日：2016-03-10

申请号：US14476969

申请日：2014-09-04

Applicant: Cisco Technology, Inc.

Inventor： Hang Jin ,  Tong Liu ,  Pawel Sowinski ,  De Fu Li ,  John Skrobko

IPC: H04B10/079 ,  H04L12/26 ,  H04J3/16

CPC classification number: H04B10/0795 ,  H04B10/0793 ,  H04J3/1694 ,  H04J14/086 ,  H04L12/2801 ,  H04L43/0882

Abstract: Presented herein are techniques for detection and avoidance of interference in a telecommunications network. In one example, a cable modem termination system (CMTS) is configured to receive upstream traffic from a plurality of cable modems. The CMTS detects collision characteristics resulting from substantially simultaneous transmissions from different combinations of the cable modems. Based on the detected collision characteristics, the CMTS designates/identifies collision groups for each of a plurality of the cable modems. After designation of the collision groups, the CMTS schedules upstream transmissions by the plurality of cable modems such that cable modems within the same collision group do not transmit within a same time frame and such that two or more cable modems that are not within the same collision group may transmit within a same time frame.

Abstract translation: 这里提出的是用于检测和避免电信网络中的干扰的技术。 在一个示例中，电缆调制解调器终端系统（CMTS）被配置为从多个电缆调制解调器接收上行流量。 CMTS检测来自电缆调制解调器的不同组合的基本同时传输产生的冲突特性。 基于检测到的碰撞特性，CMTS指定/识别多个电缆调制解调器中的每一个的冲突组。 在指定冲突组之后，CMTS调度多个电缆调制解调器的上行传输，使得同一冲突组内的电缆调制解调器在相同的时间帧内不发送，并且使得两个或更多个不在同一冲突内的电缆调制解调器 组可以在相同的时间帧内传输。